lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/lib/mlibc/options/ansi/include/errno.h b/lib/mlibc/options/ansi/include/errno.h
new file mode 100644
index 0000000..7730b16
--- /dev/null
+++ b/lib/mlibc/options/ansi/include/errno.h
@@ -0,0 +1,31 @@
+#ifndef _ERRNO_H
+#define _ERRNO_H
+
+#include <abi-bits/errno.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef __MLIBC_ABI_ONLY
+
+// Some programs define their own errno as an "extern int" if it is not a macro.
+#define errno __mlibc_errno
+extern __thread int __mlibc_errno;
+
+int *__errno_location(void);
+
+// Linux extensions.
+
+extern char *program_invocation_name;
+extern char *program_invocation_short_name;
+extern char *__progname;
+extern char *__progname_full;
+
+#endif /* !__MLIBC_ABI_ONLY */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _ERRNO_H